#VU78490 Permissions, Privileges, and Access Controls in D-Bus - CVE-2023-34969
Published: July 21, 2023
Vulnerability identifier: #VU78490
Vulnerability risk: Low
CVSSv4.0: CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:A/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2023-34969
CWE-ID: CWE-264
Exploitation vector: Local access
Exploit availability:
No public exploit available
Vulnerable software:
D-Bus
D-Bus
Software vendor:
Freedesktop.org
Freedesktop.org
Description
The vulnerability allows a local user to perform a denial of service (DoS) attack.
The vulnerability exists due to an error in the dbus-daemon when sending a reply message from the "bus driver". If a local privileged user (e.g. root) is using the org.freedesktop.DBus.Monitoring interface to monitor message bus traffic, another unprivileged user with the ability to connect to the same dbus-daemon can force the service to send an unreplyable message and perform a denial of service (DoS) attack.
Remediation
Install updates from vendor's website.